Jenny wanted to play the drums in the third-grade music show. But on the first day of practice, Mr. Parker handed her a small metal triangle and a thin metal stick.

Jenny frowned. “It only makes one sound,” she whispered to her friend Paloma.

For two weeks, Jenny practiced with the band. She learned to count the beats and wait. Her triangle played only once, at the very end of the song, after the drums stopped.

On the night of the show, the gym was full of families. When the drums stopped, the room was silent. Jenny tapped the triangle. Ting! The bright sound rang across the whole gym.

After the show, Jenny’s dad hugged her. “I could hear you all the way from the back row,” he said. Jenny smiled. One sound had been enough.